خير جليس في الزمان...هو...الويب

[كاملة رجب]

خير جليس
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في الزمان
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هو
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ويب




ناسا
وكالة الفضاء الامريكية العالمية
تهتم بابحاث ودراسات وعلوم واستكشاف الفضاء
http://www.nasa.gov/externalflash/nasa_gen/index.html

[كاملة رجب]

وخير جليس في الأنام موقع انترنيتي

ويكون أروع لو كان فلكي ، ولاسيما ناسا

لنجعل شتاءنا اروع مع:



Recently Discovered Asteroid Could Hit Mars in January
December 21, 2007

A recently discovered asteroid which passed close to the Earth in November, is now headed towards a very close passage by Mars in late January, and there is a small chance that it could hit that planet. The probability of a collision is only 1 chance in 75, but scientists are excited about the possibility. If it happens, the impact would occur on January 30, 2008 at around 10:55 UT (2:55 a.m. PST).

Full Story

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Near-Earth Object Testimony before the U.S. House of Representatives Subcommittee on Space and Aeronautics
November 2007



On November 9, 2007, two NASA representatives and four outside witnesses provided oral and written testimony to the House Subcommittee and responded to several questions from Subcommittee members. Most of the discussion centered upon the status of NASA's ongoing near-Earth object search program, NASA's March 2007 Report to Congress on the next generation search for so-called potentially hazardous asteroids (PHAs) larger than 140 meters in diameter and the utility of the Arecibo planetary radar in refining PHA orbits and characterizing their physical natures. The NASA witnesses were Dr. James Green (Director, Planetary Science Division, Science Mission Directorate) and Dr. Scott Pace (Associate Administrator, Program Analysis and Evaluation). The outside witnesses were Dr. Donald Yeomans (Near-Earth Object Program Office manager at JPL), Dr. Don Campbell (Professor of Astronomy, Cornell University), Dr. Anthony Tyson (Professor of Physics at the University of California, Davis) and Russell Schweickart (Chairman, B612 Foundation).

These testimonies can be accessed at:



See also the NASA's March 2007 Report to Congress.

[كاملة رجب]

Near-Earth Object Testimony before the U.S. House of Representatives Subcommittee on Space and Aeronautics
November 2007



On November 9, 2007, two NASA representatives and four outside witnesses provided oral and written testimony to the House Subcommittee and responded to several questions from Subcommittee members. Most of the discussion centered upon the status of NASA's ongoing near-Earth object search program, NASA's March 2007 Report to Congress on the next generation search for so-called potentially hazardous asteroids (PHAs) larger than 140 meters in diameter and the utility of the Arecibo planetary radar in refining PHA orbits and characterizing their physical natures. The NASA witnesses were Dr. James Green (Director, Planetary Science Division, Science Mission Directorate) and Dr. Scott Pace (Associate Administrator, Program Analysis and Evaluation). The outside witnesses were Dr. Donald Yeomans (Near-Earth Object Program Office manager at JPL), Dr. Don Campbell (Professor of Astronomy, Cornell University), Dr. Anthony Tyson (Professor of Physics at the University of California, Davis) and Russell Schweickart (Chairman, B612 Foundation).

These testimonies can be accessed at:



See also the NASA's March 2007 Report to Congress.

[كاملة رجب]

Predicting Apophis' Earth Encounters in 2029 and 2036
October 2007



Researchers at NASA/JPL, Caltech, and Arecibo Observatory have released the results of radar observations of the potentially hazardous asteroid 99942 Apophis, along with an in-depth analysis of its motion. The research will affect how and when scientists measure, predict, or consider modifying the asteroid's motion. The paper has been accepted for publication in the science journal "Icarus" and was presented at the AAS/DPS conference in Orlando, Florida in October of 2007.

FULL STORY

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Predicting Apophis' Earth Encounters in 2029 and 2036
October 2007



Researchers at NASA/JPL, Caltech, and Arecibo Observatory have released the results of radar observations of the potentially hazardous asteroid 99942 Apophis, along with an in-depth analysis of its motion. The research will affect how and when scientists measure, predict, or consider modifying the asteroid's motion. The paper has been accepted for publication in the science journal "Icarus" and was presented at the AAS/DPS conference in Orlando, Florida in October of 2007.

FULL STORY

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رحلة في الويب



على جناح النت


الى ذلك الجزء الغامض من المحيط الأطلسي الذي يبتلع بداخله آلاف

السفن و الطائرات دون أن تترك أي أثر، ولم يستطع أحد حتى الآن

أن، يفسر بشكل مؤكد سر هذا الإختفاء الغريب !!

ماجديد ؟ وماتفسير ظواهره؟؟؟؟


http://www.occultopedia.com/b/bermuda_triangle.htm

[كاملة رجب]

رحلة في الويب



على جناح النت


الى ذلك الجزء الغامض من المحيط الأطلسي الذي يبتلع بداخله آلاف

السفن و الطائرات دون أن تترك أي أثر، ولم يستطع أحد حتى الآن

أن، يفسر بشكل مؤكد سر هذا الإختفاء الغريب !!

ماجديد ؟ وماتفسير ظواهره؟؟؟؟


http://www.occultopedia.com/b/bermuda_triangle.htm

[كاملة رجب]

Deep Impact spacecraft zips past Earth

By ALICIA CHANG, AP Science Writer
Tue Jan 1, 5:40 PM ET



LOS ANGELES - A comet-busting NASA spacecraft zipped past Earth on Monday on its way to rendezvous with another comet in an extended mission that will also see it hunt for Earth-sized planets around a cluster of stars. The Deep Impact probe made the first of three flybys designed to use the planet's gravity to hurtle the spacecraft toward comet Hartley 2 for a 2010 meeting.


At its closest, the spacecraft was 10,000 miles above Australia.

"We're taking laps around the sun until the comet comes," said William Blume of NASA's Jet Propulsion Laboratory.

In 2005, Deep Impact became the first spacecraft to crack open a comet by releasing a copper impactor that smashed into Tempel 1, giving scientists their first glimpse of the interior. The mothership survived and was placed in safe mode before it was tapped for an encore.

The new mission, known as Epoxi, calls for Deep Impact to meet Hartley 2 about 12 million miles from Earth at the time of the encounter. Deep Impact will hover 550 miles from the half mile-wide surface and use its two telescopes and infrared spectrometer to map features and record gas outbursts.

On its way to the comet, Deep Impact will spend six months using one of its telescopes to search for Earth-sized planets around five nearby stars, which are known to have Jupiter-like planets orbiting them.

The extended mission, managed by JPL in Pasadena, cost $40 million, compared to the $333 million it took to collide with Tempel 1.

NASA initially wanted Deep Impact's second act to be an exploration of comet 85P/Boethin in 2008. But to scientists' surprise, a bevy of ground and space telescopes were unable to spot it this fall. Astronomers believe the comet may have shattered into specks too small to be seen from Earth.

Mission managers then asked the space agency to change course and visit Hartley 2 — which required a path correction and an extra two years of travel.

___

On the Net:

Epoxi mission: http://epoxi.umd.edu

Deep Impact mission: http://www.nasa.gov/mission_pages/de...ain/index.html

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Science Video


The carbon friendly kangaroo

http://cosmos.bcst.yahoo.com/up/play...26722&src=news